Yes…it remains 0 until you receive your first payment. It doesn’t show balance immediately. Around the 8th of each month payouts begin for all ads seen the prior month. Payouts can take days or sometimes weeks.
If you only have had 4 ads, that’s not much. People are having to see upwards of like 600 ads to get just 1 or 2 BAT in a month. It is only March 9 and I have already seen 310.